Sacha Baron Cohen is facing legal action after being branded a ‘big liar’ by a man he describes as a terrorist in the new Bruno film.

The prankster last week boasted on US TV how he found his own ‘real terrorist’ to trick into an interview with his camp alter ego Bruno.

Bruno creator Baron Cohen has been accused of making up his ‘terrorist’ meeting

But now the ‘terrorist’ in question has now stepped forward to brand Cohen’s claims a sham.

Ayman Abu Aita says he plans to sue Cohen for painting him as a dangerous member of the ‘Al-Axa Martyrs Brigade, the number one suicide bombers out there’.

His warning comes after Cohen bragged on the David Letterman show how he tracked down his own terror leader, after the CIA failed to help him with any viable leads, reportsWorldNetDaily.

Baron Cohen says he found his own and then filmed scenes with ‘terrorist’ Aita, using only a former bodyguard of Enrique Iglesias for protection.

Cohen depicts the film’s most risky scene as Bruno tries to get himself kidnapped by terrorists to achieve global fame.

He taunts a ‘terrorist’ in a ‘secret location’ on film, telling him ‘your king Osama’ looks like ‘a dirty wizard or a homeless Santa’.

Now Aita says cocky Cohen is not such a daredevil after all, reportedly claiming he is in fact an active legitimate political leader.

He claims to have once helped two lost Israeli solders return home and also claims to be a board member of the Holy Land Trust, a non-governmental organisation promoting Palestinian rights.

He says his days as a member of liberation group Al Aqsa Martyrs Brigades ended in 2003 after a stint in jail.

Aita reveals Cohen, 37, did not, in fact, meet him in an undisclosed location with armed henchmen present.

Instead they met in a restaurant in the town of Beit Jala, in the West Bank under Israeli control. He says his doesn’t carry weapons and his ‘armed guard’ was in fact an American manager of the Holy Land Trust.

‘He said he is a German actor making documentaries watched by young people. He wanted to make a story to mobilize the young people to help us (Palestinians). I didn’t have any impression he would use my interview in a bad way.’

Now the Palestinian warns the film star he is going to sue, claiming the scenes ‘made me big damages’.